Bug#575868: libc6: postinst check for services that need be restarted assumes all initscripts support the 'status' action

[Nikolaus Schulz <microschulz@web.de>]

Package: libc6
Version: 2.10.2-6
Severity: normal

Hi,

the check in the postinst for services that need be restarted is buggy:

,----[ libc6.postinst ]
|         for service in $check; do
|             if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
|                 invoke-rc.d ${service} status 2>/dev/null || status=$?
|                 if [ "$status" = "0" ] || [ "$status" = "1" ] ; then
|                     services="$service $services"
|                 elif [ "$status" = "100" ] ; then
|                     echo "WARNING: init script for $service not found."
|                 fi
|             else
`----

The problem is, it is not required for initscripts to provide the 'status'
command (although supporting it is an unofficial release goal[1]).

For example, when I upgraded from lenny to current squeeze, the following
packages with initscripts checked in the postinst didn't support the 'status'
command:

    atd cron lpd openbsd-inetd rsync

Of these, atd, lpd and rsync returned the exit code "1", which is acceptable;
cron and openbsd-inetd however returned the exit code "2", causing them not to
be restarted.

(Actually, NO services where restarted anyway due to bug #569701 (non-breaking
space in libc6's postinst).)

Nikolaus

[1] http://wiki.debian.org/LSBInitScripts/StatusSupport

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-3-686 (SMP w/1 CPU core)
Locale: LANG=de_DE.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libc6 depends on:
ii  libc-bin                      2.10.2-6   Embedded GNU C Library: Binaries
ii  libgcc1                       1:4.4.2-9  GCC support library

Versions of packages libc6 recommends:
ii  libc6-i686                    2.10.2-6   GNU C Library: Shared libraries [i

Versions of packages libc6 suggests:
ii  debconf [debconf-2.0]         1.5.28     Debian configuration management sy
ii  glibc-doc                     2.10.2-6   Embedded GNU C Library: Documentat
ii  locales                       2.10.2-6   Embedded GNU C Library: National L

-- debconf information:
  glibc/upgrade: true
  glibc/disable-screensaver:
  glibc/restart-failed:
  glibc/restart-services: